1. From the Department of Urology Ottawa Civic Hospital, Ottawa, Ontario, Canada.
2. From the Department of Queens Way Carleton Hospital, Nephrology Ottawa Civic Hospital, Ottawa, Ontario, Canada.
3. From the Department of Pathology, Ottawa Civic Hospital, Ottawa, Ontario, Canada.
4. From the Department of King Khalid University Hospital, Department of Urology, Ottawa Civic Hospital, Ottawa, Ontario, Canada.
5. From the Department of Laboratory Medicine, Ottawa Civic Hospital, Ottawa, Ontario, Canada.